Maxim PH50B Product Bulletins
20195 South Diamond Lake Road, Suite 100 • Rogers, MN 55374
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SERVICE BULLETIN
Toll-Free: 800-621-2789 • Website: maximmfg.com • Email: sales@maximmfg.com
MODEL: PH50B (PLOW HOSS)
BULLETIN #: MPH06292018
KIT CONTENTS:
• 80029 ¼-20x3/4” bolt (3)
• 86115 5/16-18 X 1-1/4 HEX SCREW GR 5-ZINC (1)
• 87373 NUT, CLIP, 1/4-20, 0025-015, BLACK (1)
• MX-500049 Belt Cover (1)
• MX-500073 Welded Belt guide (1)
• MX-500074 Frame spacer (1)
• Engine throttle control decal
REWORK PROCEDURAL STEPS:
1. Remove the three fasteners which secure the belt guard. The belt guard
and the mounting bolts will not be reused.
2. Engine Adjustments:
2.1. Loosen the four engine mounting bolts located under the engine.
2.2. Use a ruler to measure and adjust the engine to achieve a distance of
1-5/8” from the front of the engine mounting bracket and the engine
case see Image 1.
2.3. Use a framing square (if available) to ensure the engine case is
perpendicular to the tiller chassis see image 2. Once aligned tighten
the four engine mounting bolts.
Document: MX-500076 Model: PH50B Rev. A Date: 7/5/18 Page: 1
20195 South Diamond Lake Road, Suite 100 • Rogers, MN 55374
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STEP:
STEP:
4.1
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STEP:
4.2
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STEP:
Toll-Free: 800-621-2789 • Website: maximmfg.com • Email: sales@maximmfg.com
3. Belt guide update:
3.1. Locate the mounting fasteners of the belt guide (Image 3). Please note that both fasteners have an
additional standoff washer located between the bracket and the engine gear reduction.
3.2. Remove the two bolts retaining the belt guide as well as the push on nut which retains the belt cover.
The bolts and washer will be reused in next step.
3.3. Install the new belt guide supplied in the kit using the same fasteners as last step (Image 4). Be sure to
install the spacer in the same location as it was removed. Torque fasteners to 140 in/lbs. Install push on
nut which retains the cover to the bracket.
3.1 and 3.2
4. Tensioner arm rework:
4.1. Disconnect the clutch cable from the tensioner arm (Image 5).
4.2. Please note that there are several washers used in the mounting of the belt tensioner arm (Image 5).
Remove the single fastener which retains the belt tensioner. This hardware will be reused.
Document: MX-500076 Model: PH50B Rev. A Date: 7/5/18 Page: 2
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