8 -29

8.1 FUEL SYSTEM TROUBLESHOOTING

The following troubleshooting chart is to be used to

isolate fuel system problems and give possible causes

are corrective action responses

The troubleshooting key is generic and can be used for

several types of transmissions. Use only those

possible causes and corrective actions that apply to the

unit.

SECTION 8 - FUEL SYSTEM
TROUBLE PO SSIBLE CAUSES
(Refer to Key Below)
CORRECTIVE ACTION
Hard Starting 1, 3, 4, 6, 11, 12, 14, 16, 17, 18 clean, repair or replac e
Fuel Leak at Carburetor 5, 7, 17 repair or replace
Engine Floods 5, 15, 17 repair or replace
Will not idle 1, 2, 3, 6 repair or replace
Rich idle 1, 6, 14 repair or repla ce
Idles with Needle Closed 14 repair or replace
Hunts Erratic Idle 2, 3, 6, 7, 12, 13, 14, 15, 18 repair or replace
Idles Fast Lean 2, 3, 7 repair or replace
Will Not Accelerate 1, 6, 11, 12, 14, 15, 16 repair or replace
Over Rich Acceleration 1, 15 repair or replace
Hesitates 2, 6, 11, 12, 16 repair or replace
Will Not Run at High Speed 1, 11, 12, 14, 16 repair or replace
Low Power 1, 3, 11, 14, 15, 16, 17, 18 repair or replace
Hunts at High Speed 3, 6, 7, 12, 14, 15, 16, 18 repair or replace
Runs With Needle Closed 14 repair or replace
Engine Overspeeds 2, 3, 7, 14 repair or replace
TROUBLESHOOTING KEY
1 Plugged Air Filter
2 Leaky Carburetor Gasket
3 Throttle or Choke Shaft Worn
4 Choke Not Functioning
Properly
5 Plugged Atmospheric Vent
6 Air Bleed Restricted
7 Damaged or Leaky "O" Rings
8 Damaged Diaphragm
9 Stuck or Dirty Ball Check
10 Diaphragm Upside Down
11 Plugged Tank or Vent
12 Fuel Pick-up Restricted
13 Idler Port Restricted
14 Damaged Adjustment Needle
and Seat
15 Incorrect Float Height
16 Main Nozzle Restricted
17 Dirty, Stuck Needle and Seat
18 Fuel Inlet Plugged