Generic XOR 125 Service Manual

Service Manual

Holtvej 8-10, Høruphav, 6470 Sydals
Telefon: [phone]
Fax: [phone]

E-mail: [e-mail] · www.scanmi.dk
CVR: 27 73 31 07

November 2010

XOR 125

Maxi scooter

1

PREFACE

The service manual has been specially prepared to provide all the necessary information for the proper

maintenance and servicing.

You have now a new type of scooter that has many techinal features such as:

V-belt drive automatic transmission

Forced air-cooling system

CDI ignition system

Electric starter system

Those who will be servicing the scooter should carefully review the manual before performing any repair or

services. Major modifications and changes incorporated later will be advised to GENERIC product distributor in

each market. Therefore, if newest information is requested in the future, please contact the local GENERIC

distributor.

The scooters distributed in your country mignt differ in minor respects from the standard specification and, if they

do, it is because some minor modifications had to be made to comply with the statutory requirements of your

country.

2

GENERAL INFORMATION

TYPE IDENTIFICATION

FUEL AND ENGINE OIL

BREAK-IN PROCEDURE

PRECAUTIONS AND GENERAL INSTRUCTIONS

SPECIFICATIONS

CONTENT

3

TYPE IDENTIFICATION



ENGINE NUMBER

ENGINE NUMBER ① is carved on rear crankcase as
Shown in figure.

Both FRAME NUBER AND ENGINE NUMBER are designed specially for registering your scooter and ordering
spare parts.

FUEL AND ENGINE OIL

Be sure to use specified fuel and engine oil.
Some specifications are as follows:

FUEL

Unleaded, the minimum octane number is 95 or more.

ENGINE OIL

For GENERIC SYSTEM, we recommend special engine oil, you can choose high quality Four-stroke engine oil
(SHELL ULTRA 4 – 15W40)

GEAR OIL

Use high quality, all-purpose 80W90 engine oil for your vehicle.

BREAK-IN TIME

General requirements are as follows：
 Limit break-in speed：

At the first 100KMS mileage，play throttle less than 4/5 throttle；

 Don’t run engine too long during break-in time, and try to change throttle position.

1

4

PRECAUTIONS AND GENERAL INSTRUCTIONS

• Correctly abide by the following items when disassembling and assembling scooter:

• Don’t run engine indoors without ventilation;

• Be sure to replace new bushings, circlips, O-rings and cotter pins with new ones；

CAUTION

• It is forbidden to use the circlip removed from shaft again, only use new one；

• Be very carefull to install new circlip for fear that the end hatch of circlip exceeds required sliding surface

for shaft；

• After installing circlip, inspect whether it has been completely clipped into the groove.

• Fix bigger diameter bolt first when tightening cylinder head or cylinder, and tighten to specified torque

gradually from inside to outside at diagonal order.

• Use special tools for some special requirements；

• Use original components and recommended engine oil；

• Keep each other’s safety when several persons do；

• Inspect looseness and operating state of components after reassembling them.；

• Take high care of gasoline, which is explosive, and never use gasoline as lotion.

The words like warning, notice, note may turn out incessantly in the manual, which means:

WARNING The personal safety of the rider may be involved. Disregarding the information could result in injury
to the rider.
CAUTION These instructions point out special service procedures or precautions that must be followed to
avoid damaging the machine.
NOTE it provides some special information, which keeps maintenance easier and important instructions
clearer..

REPLACEMENT COMPONENTS

Be sure to use genuine GENERIC components or their equivalent.. Genuine GENERIC components are high
quality parts which are designed specially for your vehicle.

CAUTION

Damage to the scooter may result from use of replacement components which are not Equivalent in quality to
genuine GENERIC parts, and it can lead to performance problems.

5

6

SPECIFICATIONS
DIMENSION AND NET WEIGHT

OVERALL LENGTH 1770 mm
OVERALL WIDTH 702 mm
OVERALL HEIGHT 1085 mm
WHEELBASE 1280 mm
NET WEIGHT 100 kg

CHASSIS

Front shock absorber spring, oil damp
Rear shock absorber spring, oil damp
Front wheel 120/70-12
Rear wheel 130/70-12
Front brake Discφ190
Rear brake Drumφ110

ENGINE

Type four-stroke, air cooled
Intake system piston-reed valve
Cylinder QTY. 1
Bore 52.4mm
Stroke 57.8mm
Discharge 124.6ccm
Compression ratio 9.5:1
Air cleaner dry
Starting system electric and kicking start
Lubricating system pressure lubricating

ELECTRIC

Ignition mode CDI
Spark plug CR7HSA
Storage battery YTX7L-BS
Generator AC magneto
Fuse 15A
Headlight 12V—35/35W
Turning light 12V/10W
Taillight 12V—21/5W

CAPACITY

FUEL TANK 5.2L
ENGINE OIL TANK 1L
GEAR OIL 0.1L

Transmission system

Clutch system dry auto a centric
Gearshift mechanism CVT stepless
Operating mode of gears shift mechanism
Automatic a centric
Step less shift range 0.86~2.64

*the above data may be modified without any
notification.

7

Periodic maintenance and service

Periodic maintenance and service schedule
Maintenance and service procedures
Storage battery
Spark plug
Cylinder head nut and exhaust pipe bolt
Cylinder head and cylinder
Fuel level line
Air cleaner
Throttle cable
Engine idle speed
Oil pump
Gear oil
Braking
Tire
Steering
Front shock absorber
Rear shock absorber
Vehicle bolts and nuts

CONTENTS

8

Periodic maintenance and service schedule

The following table lists all required intervals for maintenance and service，following which, you are assured to have
your scooter perform in the best way.

Note

Do more frequent maintenance when often riding on bad road

Periodic maintenance table

PERIODICAL MAINTENANCE SCHEDULE

Maintenance
Kilometres

Item

Check Items

500KM 3500KM 6500KM 9500KM 12500KM 15500KM 18500KM 21500KM Remarks

1 Air cleaner element

I C R C R C

2 Air cleaner

I C R

3 Tire pressure

I I I I I I I I

4 Battery

I I I I I I I I

5 Spark plug

I I I I R I R I

6 Carburettor (idle speed)

I I I I

7 Steering bearing and handles

I I

8 Transmission oil

R Replace all 6000Km or once a year

9 Engine oil

R Replace all 3000km

10 Drive belt

I I R I R

11 Fuel tank switch and lines

I I I I

12 Throttle valve operation and cable I I I I R I I R

13 Engine bolts and nuts

I I I I

14 piston

Replace all 12500Km

15 Exhaust system

I

16 Shock absorbers

I I I

17 Front/rear suspension

I I I

18 Main/side stand

I L L I/L L L I/L L

19 Brake mechanism/brake pads

I I I I I I I I

20 Bolts/nuts for each component

I I I I

The above maintenance schedule is established by taking the monthly 800 kilometers as a reference which ever comes
first.
Have your motorcycle checked and adjusted periodically by your GENERIC Authorized Dealer to maintain the
motorcycle at the optimum condition.
Code: I ~ Inspection, cleaning, and adjustment R ~ Replacement C ~ Cleaning (replaced if necessary) L ~
Lubrication
Remark: 1. Clean or replace the air cleaner element more often when the motorcycle is operated on dusty roads or
in the Heavily- polluted environment.

Notes in the remarks are used to indicate the applicable models.

9

Maintenance and adjustment procedures

The section describes the servicing procedures for each item of the Periodic Maintenance requirements.

Storage battery

Inspect twice a year the contact. Clean if any corrosion.
Remove the battery and charge before you store the vehicle for long time.

Uncover seat, and then remove the battery box cap in the
Middle of helmet barrel.

Disconnect negative pole line end, positive end, and then remove battery；

Measure the voltage between the two ends of battery with
voltage gauge，charge if the voltage is below 11,9V

10

Cylinder head nuts and exhaust pipe bolts

Tighten at each service.

If cylinder head nuts are not tightened to the specified torque, may result
in leakage of compressed fuel-air mixture and reduce output, tighten the
cylinder head nuts in the following procedures:：

1． Remove the frame lower covers.
2． Remove the cylinder head cover bolt.
3． Remove spark plug cap.
4． Tighten the nuts evenly one by one to the their specified torque.
Tighten the nuts in the order indicated.

Tightening torque：

Cylinder head nut：15-18N.m

Exhaust pipe bolt：15-18N.m

Cylinder and cylinder head

Clean carbon every 6000 km

Carbon deposits in the combustion chamber and the cylinder head will
raise the compression ratio and may cause preignition and overheating.
Carbon deposited at the exhaust port of the cylinder will prevent the flow
of exhaust gases, reducing the output. Remove carbon deposits
periodically.

11

SPARK PLUG

Neglecting the spark plug maintenance eventually leads to difficult starting and poor performance. If the spark plug is

used for a long time, the electrode gradually burns away and carbon builds up along the inside part. In accordance

with the periodic table, the plug should be removed for inspection, cleaning and to reset the gap.

z Carbon deposits on the spark plug will prevent good sparking and

cause misfiring. Clean the deposits periodically.

z If the center electrode is fairly worn down, the plug should be

replaced and the plug gap set to the specified gap using a thickness

gauge.

Thickness gauge

Spark plug gap：0.6-0.7 mm (0.024-0.028 inch)

Check the spark plug for burnt condition. If abnormal replace the spark

plug as indicated in the chart.

NGK TROCH REMARKS

BPR7HS E7RTC Standard

z Tighten the spark plug to the specified torque.

Spark plug

Tightening torque:15-18N.m

NOTE:

z To check the spark plug, first make sure that the fuel used is unleaded gasoline, and if plug is either sooty with

carbon or burnt white, replace it.

z Confirm the thread size and reach when replacing the plug.

FUEL LINE

Inspect at initially 500 km and every service, replace every 4 years.

12

AIR CLEANER

Clean every 3000KM

If the air cleaner is clogged with dust, intake resistance will, be increased with a resultant decrease in power output
and an increase in fuel consumption. Check and clean the element in the following manner.

 Remove screw 1 and screw 2，take down air cleaner
 Unscrew tapping screw 3，remove air cleaner cap 4
 Fill a washing pan of a proper size with Non-flammable cleaning solvent.

Immerse the air Cleaner in the cleaning solvent and wash them clean.

 Squeeze the cleaning solvent out of the washed element

By pressing it between the palms of both hands: do not twist
or wring the air cleaner filter core element or it will develop tears.，

 Immerse cleaned filter core of air cleaner in CCI or CCI SUPER oil, and

squeeze the oil out of the core，which may be slightly wet with oil.

 Install air cleaner filter core in the reverse order of removal.

CAUTION：
 Before and during the cleaning operation, inspect the core for tears. A
tore core must be replaced
 Be sure to position the filter core, so that no incoming air will bypass it.
Remember, rapid wear of piston rings and cylinder bore is ofter caused by
defective or poorly fitted filter core.

А Non-flammable cleaning solvent
Б CCI or CCI SUPER oil

THROTTLE CABLE

Adjust every 1000KM.

Loosen locknut ，and adjust throttle cable play by turning adjuster in or out to obtain the following cable play. After
adjusting the calbe play，tighten the locknut.
Cable play：0.5-1.0MM（0.02.-0.040 inch）

Engine idle speed

Adjust every 1000KM.

• Adjust the throttle cable play.

• warm up the engine.

Note：
Warm up engine for 10 minutes.

Connect an electric tachometer to the connecting protion of the
magneto lead wire as shown in the illustration. Use the selector key “C’
position.

3

13

Tachometer

Adjust the throttle stop screw to obtain the idle r/min as follows:

Idle speed：1600±100r/min

Finally adjust the throttle cable play.

14

GEAR OIL

Change as shown in the service schedule.

Inspect gear oil periodically as follows:

The transmission oil level can not be checked. It must be
replaced as listened in the manual.
0,11 L is required.

Tightening toque：9-15N.m
（0.9-1.5 kg-m ，6.5-11.0 lb-ft）

BRAKES

Inspect at initially 500 km and every service, replace brake
fluid every 2 years, replace brake hose every 4 years.

Front brake fluid level

Keep the scooter upright and place the handlebar staight.
Check brake fluid level by observing the lower limit line on the
brake fluid reservoir.
When the level is below the lower limit line, replenish with brake
fluid that meets the following specification.

Specification and classification：DOT4

WAR NING：

The brake system of the scooter is filled with a glycol-based
brake the lowest line
Fluid. Do not use or mix different types of fluid such as
silicone-based and petroleum-based. Do not use any brake fluid taken from old, used or unsealed containers. Never
reuse the brake fluid left over from the last servicing and stored for long periods.

15

WARNING：

Brake fluid, if it leaks, will interfere with safe running and immediately discolor painted surfaces.
Check the brake hoses for cracks and hose joints for leakage before riding.

Brake pads

Wearing condition of brake pads can be checked by observing

the limit line  marked on the pad. When the wear exceeds the

limit mark, replace the pads with new ones.

Bleeding air from the brake fluid circuit

Air trapped in the fluid circuit acts like a cushion to absorb a large
proportion of the pressure developed by the master cylinder and thus
interferes with the full braking performance of the brake caliper. The
presence of air is indicated by “sponginess” of the brake lever and
also by lack of braking force. Considering the danger to which such
trapped air exposes the machine and rider, it is essential that, after
remounting the brake and restoring the brake system to the
normal condition, the brake fluid circuit be purged of air in the
following manner:

• Fill up the master cyliner reservoir to the upper end of the
inspection window. Replace the reservoir cap to prevent entry of dirt.

• Attach a pipe to the caliper bleeder valve, and insert the free
end of the pipe into a receptacle.
□Bleed air from the bleeder valve.
Squeeze and release the brake level several times in rapid succession.
And squeeze the lever fully without releasing it. loosen the bleeder valve
by turning it a quarter of a turn so that the brake fluid runs into the
receptacles: the will remove the tension of the brake lever causing it to
touch the handlebar grip. Then, close the valve, pump and squeeze the
lever, and open the valve. Repeat the process until the fluid flowing
into the receptacle no longer contains air bubbles.

16

NOTE：when bleeding the braking system, replenish the brake fluid reservoir if necessary. Make sure that there is
always some fluid visible in the reservoir.

Close the bleeder valve, disconnect the pipe. Fill the reservoir with brake fluid to the upper end of the inspection
window.

BLEEDER VALVE
TIGHTENING TORQUE: 6-9N.m(0.6-0.9kg-m,4.5-6.5lb-ft)

CAUTION：
Handle brake fluid with care: the fluid reacts chemically with paint, plastics, rubber materials, etc.

Rear brake

Turn adjusting nut so that the the play of the brake lever is 15-25MM as shown in the illustration.

Brake shoe wear：
The vehicle is equipped with the brake lining limit Indicator on
the rear brake.
Inspect brake lining limit as follows：

1. First check if the brake system is properly adjusted.

2. when operating the brake, check to see that the tip of
indicator is within the range.

3. if the tip of indicator is beyond the range, the brake shoe
assembly should be raplaced with anew set of shoe.

17

Tire

Inspect at initially 500km and every 2500km thereafter

Tire pressure：
If the pressure is too high, the scooter will tend to rede stiffly and have poor
traction. Conversely, if tire pressure is too low, stability will be adversely
affected. Thereafter, maintain the correct tire pressure for good roadability
and to prolong tire life.

CAUTION：

The standard air pressure of tires is 2Bar, the use of other than standard may
cause handling instability.

Tire tread condition：
It is highly recommended to replace the tire when the remaining depth of tire
tread reaches the following specification.
Front and rear：1.6MM（0.064IN）
Tire depth gauge

Steering

inspect at initially 500km and every service.

Steering should be adjusted properly for smooth turning of handlebars and safe
running. Too stiff steering prevents smooth turning of handlebars and too loose
steering will cause poor stability.
Check that there is no play in the front fork assembly by supporting the machine so that
the front wheel is off the ground, with wheel staight ahead, grasp lower shock absorber
near the axle and pull forward. If play is found, perform steering bearing adjustment.

18

Front shock absorber

Adjust at initially 500km and each service.

Inspect the front shock absorber for oil leakage or other damage, and replace the defective parts, if necessary.

IMPORTANT:

If the front fork is too weak us 60 – 70 ml (depends on the weight of the driver) of W15 fork oil to improve the
damping.

Rear shock absorber

Adjust at initially 500km and each service.

Inspect front shock absorber for oil leakage and other damage, and replace the defective parts if necessary.

No. Item N•m Kg-m

1 Front axle nut 55-60 5.5-6

2 Handle tightenging nut 37-44 3.7-4.4

3 Steering sterm locknut 37-44 3.7-4.4

4 Disc brake caliper fixing bolt 22-29 2.2-2.9

5 Disc brake master cylinder hose fixing bolt 22-29 2.2-2.9

6 Disc brake fixing bolt 5-9 0.5-0.9

7 Front shock absorber fixing bolt 37-44 3.7-4.4

8 Engine pivot fixing nut 55-60 5.5-6

9 Engine bracket fixing nut 37-44 3.7-4.4

10 Rear wheel fixing nut 100-130 10-13

11 Rear brake rocker arm fixing bolt 5-9 0.5-0.9

12 Rear shock absorber under fixing bolt 22-29 2.2-2.9

13 Start pedal mounting screw 15-20 1.5-2

14 Rear shock absorber top fixing bolt 37-44 3.7-4.4

19

③

①

②

④

⑤

⑥

⑦

⑧

⑨

⑩

14

20

LUBRICATION

Proper lubrication is important for smooth operation and long life of each working part of the scooter. The major
lubrication points are indicated below：
NOTE：

1. Lubricate exposed parts which are subject to ruse with engine oil.

2. Before lubricating each part, clean off any rusty spots and wipe off any grease, oil dirt of grime.

WARNING：Be careful not to apply too much grease to the rear brake camshaft, otherwise brake slippage will result
from the presence of grease in brake drum.

steering stem bearing
front wheel bearing
engine bracket
rear brake camshaft
side stand
rear brake shaft and rear brake cable
speedometer cable and gear box
main stand

ΑA: lubrication

A

A
A

A

 A

A

21

ENGINE

CONTENS

Engine components removal with the engine in place

Engine removal and remounting

Engine removal

Engine remounting

Engine disassembly

Engine components inspection and servicing

Bearings

Oil seals

crankshaft

automatic clutch inspection

cylinder head

cylinder

piston

reed valve

engine remounting

oil seals

bearings

bushings

crankshaft

crankcase

rear axle shaft

transmission

starter pinion and starter gear

Movable driven and clutch

Movable drive

Kicking starter

Piston

Oil pump and oil pump driven gear

Intake pipe

Magneto

22

Engine components removable with the engine in place

The parts listed below can be removed and reinstalled without removing the engine from the frame.

Engine left side

Kicking starter lever

Clutch brake pad kit

Driver left face

V-b elt

Driver belt right face

Electric starter gear

Super clutch

Driven face

Engine center

Carburetor

Intake pipe

Reed valve

Oil pump

Worm wheel

Cylinder head

Cylinder

Piston

Engine right side

cooling fan

Magneto

Starter motor

23

TORQUE VALUES

STANDARD

● 5 mm bolt and nut

5 N.m (3.5 lbf.ft)

● 6 mm bolt and nut

10 N.m (7.2 lbf.ft)

● 8 mm bolt and nut

22 N.m (16 lbf.ft)

●10 mm bolt and nut

35 N.m (25 lbf.ft)

●12 mm bolt and nut

55 N.m (40 lbf.ft)

ENGINE

● Cylinder head nut

28 N.m (20.7 lbf.ft)

● Spark plug

12 N.m (8.9 lbf.ft)

● Cylinder head bolt

20 N.m (14.8 lbf.ft)

● Alternator bolt

8 N.m (5.9 lbf.ft)

FRAME

● Handlebar upper holder bolt

24 N.m (17.7 lbf.ft)

● Throttle housing cover screw

4 N.m (2.9 lbf.ft)

● Steering shaft nut

50 N.m (36.9 lbf.ft)

● Steering shaft holder bolt

33 N.m (24 lbf.ft)

● Wheel rim bolt

18 N.m (13.3 lbf.ft)

● Tie rod lock nut

35 N.m (25.8 lbf.ft)

● King pin nut

40 N.m (29 lbf.ft)

● Handlebar lower holder nut

40 N.m (29.5 lbf.ft)

● Front wheel bolt

24 N.m (17.7 lbf.ft)

● Front axle castle nut

40-60 N.m (30-45 lbf.ft)

● Front brake arm nut

4 N.m (3.0 lbf.ft)

● Rear brake arm nut

7 N.m (5.2 lbf.ft)

● Rear axle castle nut

40-60 N.m (30-45 lbf.ft)

● Rear wheel bolt

24 N.m (17.7 lbf.ft)

● Exhaust muffler mounting bolt

30 N.m (22.1 lbf.ft)

● Engine hanger bolt

30 N.m ( 22 lbf.ft)

● Rear axle holder bolt

90 N.m (65 lbf.ft)

● Swing arm pivot nut

90 N.m (65 lbf.ft)

● Rear shock absorber mounting nut

45 N.m (33 lbf.ft)

24

CYLINDER HEAD / VALVES

SERVICE INFORMATION CYLINDER HEAD REMOVAL
TROUBLESHOOTING CYLINDER HEAD INSTALLATION
CAMSHAFT COMPOSITION REMOVAL

SERVICE INFORMATION
GENERAL

This section describes cylinder head, valves, camshaft and the other parts maintenance. The engine must be
removed from the frame to service cylinder head. Camshaft lubrication oil is fed to the cylinder head through
an oil orifice in the engine case. Before installing the cylinder head be sure the orifice is not clogged and the
gasket, O-ring and dowel pins are in place.

SPECIFICATIONS

ITEM STANDARD SERVICE LIMIT

CYLINDER COMPRESSION

12±0.5 kg/cm

2

--------

IN 29.795 29.395

CAM LOBE HEIGHT

EX 29.560 29.160
ROCKER ARM I.D. 10.000-10.018 10.10
ROCKER ARM SHAFT O.D. 9.972-9.987 9.91
CYLINDER HEAD WARPAGE -------- 0.05

IN 32.3 31.2
VALVE SPRING FREE LENGTH

OUT 35.0 34.1

IN 4.975-4.990 4.90
VALVE STEM O.D.

EX 4.955-4.970 4.90
VALVE GUIDE I.D. IN/EX 5.000-5.012 5.30

IN 0.010-0.037 0.08
STEM-TO-GUIDE CLEARANCE

EX 0.030-0.057 0.10

IN 1.0 1.8
VALVE SEAT WIDTH

EX 1.0 1.8

TORQUE VALUES

Cylinder head bolts 8 ~ 12 n-m (0.8 ~ 1.2 kg-m)
Camshaft holder flange nuts 20 ~ 24 n-m (2.0 ~ 2.4 kg-m)
Tappet adjusting nut 9 ~ 12 n-m (0.9 ~ 1.2 kg-m)

25

TROUBLE SHOOTING

Engine top-end problems usually affect engine performance. These problems can be diagnosed by a
compression test, or by tracing engine noise to the top end with a sounding rod or stethoscope.

LOW COMPRESSION
Valve

Incorrect valve adjustment
Worn or damaged valve seats
Burned or bent valve
Incorrect valve timing

Weak valve spring

Cylinder head

Leaking or damaged head gasket
Warped or cracked cylinder head
Faulty cylinder or piston

Excessive noise

Incorrect valve adjustment
Sticking valve or broken valve spring
Worn or damaged rocker arm or camshaft
Worn or damaged cam chain
Worn or damaged cam chain tensioner
Worn cam sprocket teeth

Excessive smoke

Damaged valve stem seal
Faulty cylinder or piston rings

CAMSHAFT COMPOSITION REMOVAL

Remove the rubber tube of gas waste recovery.

Remove the cylinder head cover.

26

Remove the air cleaner and carburetor.
Remove the inlet pipe assy.
Remove the shroud compositions.

Relax the cam chain adjuster screw.
Remove the screw and O-ring and tighten the cam
chain adjusting bolt with clockwise direction.

Remove the nuts and washers.
Remove the camshaft holder and dowel pins.

Relax the camshaft gear from cam chain and remove
the camshaft.

27

INSPECTION

Inspect the cam lobes surface and height of cam
lobes for wear or damage.

Inspect the camshaft and bearings for wear or damage
and replace them if necessary.

Screw a 5mm bolt into the rocker arm shaft threaded
end. Pull on the bolt to remove the shafts and rocker
arms.

Inspect the camshaft holder, rocker arms and rocker
arm shafts for wear or damage.

28

Measure the I.D. of each rocker arm.

SERVICE LIMIT: 10.10 mm

Measure the O.D. of each rocker arm shaft.

SERVICE LIMIT: 9.91 mm

CYLINDER HEAD REMOVAL

Remove the flange bolts and cylinder head.

Remove the cylinder head gasket and dowel pins.

Remove the cam chain guide.

29

CYLINDER HEAD DISASSEMBLY

Remove the valve cotters, spring retainers and valve
springs with a valve spring compressor.

INSPECTION

Clean off all carbon deposits from the combustion
chamber.
Check the spark plug hole and valve area for cracks.

Measure the cylinder head diagonally for warpage
with a straight edge and feeler gauge.

SERVICE LIMIT: 0.05 mm