Erratic, Surging, Or Sudden Change In Governed Speed; Fuel Accumulation In The Crankcase; Fuel Distribution; Mechanical - Cushman HAULER 800X Technician's Repair And Service Manual

Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Condition
ERRATIC, SURGING, OR SUDDEN
CHANGE IN GOVERNED SPEED
FUEL ACCUMULATION IN
THE CRANKCASE

FUEL DISTRIBUTION

MECHANICAL

Possible Cause
Damaged governor spring
Problem with adjustment of accelerator,
governor and carburetor linkage
Bent governor arm
Bent governor shaft
Governor failure within the rear axle
Dirty Carburetor
Clogged carburetor vents
Carburetor float sticking
Faulty fuel pump
Faulty accelerator adjustment/function
Dirty or restricted air filter
High pressure in the fuel system
Over choking or faulty choke setting
Wrong carburetor jet for the altitude
Faulty Ignition system
Low or unbalanced compression
Poor valve sealing
Repair and Service Manual
TROUBLESHOOTING
Correction
Replace
Adjust
Repair or replace
Replace
Repair
Clean or replace. Set air/fuel mixture
screw to 1.5 turns out from the lightly seat-
ed position (No adjustment on CARB?EPA
certified engines).
Remove carburetor and clean with solvent
Disassemble and correct per the service
manual
Check for correct output. Verify fuel is not
returning through the pulse line. Clean
vent screen.
Correct per the service manual
Replace and clean air box
Check fuel cap for venting. Make sure car-
buretor vent tubes are venting
Instruct operator or adjust to limit choke to
3/4 blade travel
Verify per the altitude chart. Call your tech
rep. for more information
Check ignition output per the service man-
ual.
Perform compression or leak down test.
Refer to the service manual for the specifi-
cation.
Verify by compression or leak down test
B
B
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