Briggs & Stratton 7800921-00 Lawn Mower User Manual


 
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Reproduction
35
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
Rider Will Not
Move Or Loss
of Traction
(Manual Drive
Models)
1. Drive disc worn or damaged. 1. Replace drive disc. Contact authorized dealer.
2. Rubber drive disc is not tracking properly on
drive disc.
2. Adjust rubber drive disc. Contact authorized dealer.
3. Tapered axle bolt and nut missing. 3. Contact authorized dealer.
4. Axle bearing seized. 4. Contact authorized dealer.
5. Insufficient lubrication in chain case or
transmission/differential.
5. Contact authorized dealer.
Rider Will Not
Move Or Loss
of Traction
(Hydro Drive
Models)
1. Drive belt slipping or broken. 1. Contact authorized dealer.
2. Transmission problem. 2. Contact authorized dealer.
Blade(s) Not
Cutting
1. Blade control in the OFF position. 1. Move blade control to the ON position.
2. Mower belt slipping. 2. Adjust or replace mower belt. Contact authorized
dealer.
3. Cutting blade is dull, worn or damaged. 3. Sharpen or replace cutting blade.
Cutting Grass
Improperly
1. Uneven tire pressure. 1. Check tire pressure and adjust as needed.
2. Cutting height too low or high. 2. Adjust cutting height.
3. Engine speed too slow. 3. Move engine speed control to FAST position.
4. Forward ground speed too fast. 4. Adjust unit to a slower ground speed.
5. Terraced cut, side to side. 5. Adjust side to side leveling.
6. Excessive deck pitch, front to rear. 6. Adjust front to rear leveling.
7. Cutting blade(s) dull or damaged. 7. Sharpen cutting edges or replace blade(s).
8. Mower belt slipping. 8. Adjust tension or replace mower belt. Contact
authorized dealer.
Poor Grass
Discharge
1. Engine speed too slow. 1. Move engine speed control to FAST position.
2. Forward ground speed too fast. 2. Adjust unit to a slower ground speed.
3. Grass is wet. 3. Mow when grass is dry.
4. Excessively dull, worn or damaged blade(s). 4. Service mower blade.
5. Build up of grass clippings and debris under
deck.
5. Clean the underside of deck.
6. Improper blade installed on deck. 6. Install proper blades.
Oil Leaking 1. Leaking chain case or differential plugs. 1. Verify plugs are not cracked & are in good shape.
Check gaskets.
2. Leaking engine block. 2. Contact authorized dealer.
Troubleshooting
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