Engine Oil Pressure Low

3-20. Noisy Engine Generator

Probable cause

Possible remedy

Probable cause

Possible remedy

Generator mounting

---- Tighten generator mount-

V-belt of water pump loose - Adjust or replace V-belts

loose.

ing.

or slipping.

(para 3-58).

Generator drive pulley ---- Tighten generator drive

Thermostat sticking in ---- Replace thermostat (para

loose.

pulley.

closed position.

3-59).

Generator defective

----

Replace

defective

generator

3-15. Engine Oil Pressure Low

(para :3-46).

Probable cause

Possible remedy

3-21. Generator Overheats

Crankcase oil too low --- Add oil to proper level. Re-

Probable cause

Possible Remedy

fer to lubrication order.

Generator defective

--- Replace generator (para

Oil pressure gage defec- --- Replace oil pressure gage

3-46).

tive.

(para 3-30).

Engine generator regula- -- Adjust or replace engine

3-16. Engine Exhaust Smoky

tor out of adjustment

generator regulator

or defective.

(para 2-47).

Probable cause

Possible remedy

3-22. Battery-Generator Indicator Reads in Left-

Crankcase oil level too ---- Drain oil to proper level.

Hand Red Part of Dial

high.

Refer to figure 3-1.

Probable cause

Possible Remedy

Poor combustion caused --- Allow enough time for en-

Battery dead

--- Recharge or replace battery

by cold engine.

gine to warm up before

(para 2-4).

adjusting throttle to op-

Indicator connections --- Tighten or replace leads

erating speed. Open

loose or broken.

(para 3-52).

choke (fig. 2-7).

Indicator defective

--- Replace indicator (para

Carburetor out of adjust- ---- Adjust carburetor (para

3-52).

ment.

3-40).

Generator defective

--- Replace generator (para

3-17. Engine Backfires

3-46).

Probable cause

Possible remedy

Engine generator regula- --- Adjust or replace engine

Timing incorrect

--- Adjust ignition timing

tor out of adjustment

generator regulator

(para 3-49).

or defective.

(para 3-47).

Intake valves holding

---- Adjust intake valves (para

3-23. Battery Generated Reads in Right-Hand Red

open.

3-36).

Part of Dial

3-18. Engine Lacks Power

Probable cause

Possible remedy)

Probable cause

Possible remedy

Engine generator-regula- -- Adjust or replace engine

Timing incorrect

--- Adjust ignition timing

tor out of adjustment

generator regulator

(para 3-49).

or defective.

(para 3-47).

Fuel pump defective

--- Replace fuel pump (para

Indicator defective

--- Replace indicator (para

3-39).

3-52).

Engine speed too low --- Adjust governor setting to

3-24. Starter Fails to Turn Engine

proper rpm (para 3-41).

Probable cause

Possible Remedy

Spark plugs defective --- Replace spark plugs (para

Starter push switch de- --- Replace cranking motor

3-50).

fective.

push switch (para 3-52).

Carburetor out of adjust- --- Adjust or replace carbure-

Cranking motor solenoid --- Replace cranking motor

ment or defective.

tor (para 3-40).

relay defective.

solenoid relay (para

3-19. Engine Consumes too Much Oil

3-48).

Probable cause

Possible remedy

Cranking motor defec- --- Replace cranking motor

Too light a grade oil

--- Drain. Refill with proper

tive.

(para 3-48).

used.

--- grade shown in lubrica-

Cranking motor leads --- Replace cranking motor

tion order (fig. 3-1).

defective.

leads (para 3-48).

Oil level too high

--- Drain to proper level.

3-25. Not Enough Pressure

Piston rings not run in --- Run engine normally, re-

Probable cause

Possible remedy

placing oil as needed.

Engine not running at ---- Increase engine speed

Condition should gradu-

rated speed.

(para 3-41).

ally clear itself up.

Valves not fully opened --- Open valves (para 2-11 ).

Oil filter body loose

---- Tighten oil filter body.

Oil drain plug loose

---- Tighten plug.

3-15