Craftsman 917.38721 owner manual Other, Troubleshooting Chart, Engine Fuel System, Doesnots

Models: 917.38721

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ENGINE

ENGINE

FUEL SYSTEM

iMPORTANT: It is important to prevent gum deposits from forming in essential fuel system parts such as carburetor, fuel filter, fuel hose, or tank during storage Also, experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage

o Drain the fuel tank.

o Start the engine and let it run until the fuel lines and carburetor are empty.

oNever use engine or carburetor cleaner products in the fuel tank or permanent damage may occur

,,Use fresh fuel next season

NOTE: Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Add stabilizer to gasoline in fuel tank or storage container, Always follow the mix ratio found on stabilizer

container, Run engine at least 10 minutes after adding stabilizer to allow the stabilizer to reach the carburetor Do not drain the gas tank and carburetor if using fuel stabilizer,

ENGINE OIL

Drain oil (with engine warm) and replace with clean engine oil (See "ENGINE" in the Customer Responsibilities section of this manual).

CYLINDER

o Remove spark plug

Pour one ounce (29 ml) of oil through spark plug hole into cylinder,

oPull starter handle slowly a few times to distribute oil

o Replace with new spark, plug.

OTHER

', Do not store gasoline from one season to another.

,, Replace your gasoline can if your can starts to rest, Rust and/or dirt in your gasoline will cause problems

tf possible, store your unit indoors and cover it to give protection from dust and dirt.

oCover your unit with a suitable protective cover that does not retain moisture. Do not

use plastic Plastic cannot breathe which allows condensation to form and will cause

your unit to rust.

IMPORTANT: Never cover mower while engine and exhaust areas are still warm CAUTION: Never store the lawn mower with gasoline in the tank inside a building where fumes may reach an open flame or spark.

Allow the engine to cool before storing in any enclosure.

TROUBLESHOOTING CHART

PROBLEM

Doesnots_

CAUSE

o Dirty air fillet o Out of fuel, o Stale fuel

o Water in fuel,

o Spark plug wire is discennected.

o Bad spark plug.

. Loose blade or broken blade

adapter,

o Control bar in released

position°

o Control bar defective.

CORRECTION

o Clean/replace air fiiter. o Fillfuel tank.

o Drain tank and refill with fresh clean fuel.

°Drain fuel tank and carburetor and refill tank

with fresh gasoline. o Connect wire to plug.

o Replace spark plug.

Tighten blade bolt or replace blade adapter.

=Depress control bar to handle.

°Replace control bar.

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Craftsman 917.38721 owner manual Other, Troubleshooting Chart, Engine Fuel System, Doesnots