90-826148R2 MARCH 1997 FUEL SYSTEM - 3B-13
Possible Cause Corrective Action
Improperly mixed fuel. Contaminants(water, dirt,
etc.) in fuel.
Check fuel in tank and replace if necessary.
Fuel tank air vent closed or restricted. Check air vent on tank. Vent must be open all-the-
way and free from any contaminants.
A pinched, cut or restricted fuel line. Also loose fuel
line connection.
Inspect all fuel lines and replace as needed. Inspect
and tighten all fuel line connections.
Dirty or restricted fuel filter. Inspect and replace or clean all fuel filters.
Low fuel pump pressure. Refer to Section 3B “Fuel Pumps.”
Defective anti-siphon valve. Refer to Section 3B “Fuel Pumps.”
Needle and seat in carburetor that is either stuck
open or closed.
Refer to carburetor adjustments in this section.
Improper carburetor jet, restricted jet or idle mixture
screw out of adjustment.
Refer to carburetor adjustments in this section.
Improper float level. Refer to carburetor adjustments in this section.
Carburetor loose on intake manifold. Check tightness of carburetor nuts.
Reed block loose or gasket defective.
Using a pressure oil can, apply 2-cycle oil around
reed block housing/crankcase housing matching
surfaces and carburetor base. If engine RPM
changes, tighten bolts/nuts or replace gaskets as
required.
Improperly routed or restricted bleed hose(s). Refer to bleed hose routing in “Powerhead” section.
Damaged fuel pump diaphragm. Refer to Section 3B, “Fuel Pump.”
Carburetor mixing chamber cover leaking air. Tighten screws or replace gasket.
Off idle holes plugged. Blow with compressed air.
Main nozzle or idle nozzle air bleed holes plugged. Blow with compressed air.
Damaged reeds.
Refer to Section 4A for reed inspection.
Fuel pick-up outlet tube in fuel tank cracked. Replace
To Next Page
Loading...
Need help?
General
