Shindaiwa X7506720300, GP344 manual Carburetor Adjustment, Adjusting Engine Idle, Engine Break-In

Carburetor Adjustment

Engine Break-In

New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be made. During the break-in period your engine performance will increase and exhaust emissions will stabilize. Idle speed can be adjusted as required.

High Altitude Operation

This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above 1,100 feet ASL the carburetor may need to be adjusted by an authorized Shindaiwa service dealer.

IMPORTANT!

If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when operating the engine below 1,100 feet ASL, oth- erwise severe engine damage may result.

NOTE:

Every unit is run at the factory and the carburetor is set in compliance with emission regulations. Carburetor adjustments, other than idle speed, must be performed by an authorized Shindaiwa dealer..

Adjusting Engine Idle

CAUTION!

Never allow the pump to run dry! Operation without water can perma- nently damage the pump seals.

IMPORTANT!

A clean and unrestricted airflow is

essential to your pump’s engine perfor- mance and durability! Before attempt- ing any carburetor adjustments, inspect

and clean the engine air filter as

described in the Maintenance section of this manual.

Idle Speed Adjustment

1.Place the unit on the ground and start the engine, and then set throt- tle control lever to idle postion. Allow engine to idle 2-3 minutes until warm.

2.If a tachometer is available, adjust idle. Check Specifications page for correct idle speed.

NOTE

Carburetor fuel mixture adjustments are preset at factory and cannot be

serviced in the field.

Decrease Idle

Increase Idle

Figure 10

Idle

Adjustment

Screw

14