Shindaiwa C344, Owner'S/Operator'S Manual

20

Maintenance 

(continued)

Engine 

Cover 

Screws

Engine Cover

Muffler

Muffler Gasket 

Muffler Bolts 

Spark Arrester Screen 

Spark Arrester Cover 

Cover Screws 

Muffler and spark arrester maintenance

1.  With a 3 mm hex wrench remove the  

engine cover screws and the engine 

cover.

If the engine becomes sluggish and low 

on power, check and clean the spark 

arrester screen.

IMPORTANT!

If you note excessive carbon buildup, 

consult with an authorized servicing 

dealer.

WARNING!

Never operate the unit with a 

damage or missing muffler or spark 

arrester! Operating with a missing or 

damaged spark arrester is a fire hazard 

and could also damage your hearing.

2.  With a 4 mm hex wrench, remove the 

3 muffler bolts and the muffler.

3. 

With a small flat bladed screwdriver 

remove the 2 screws holding the 

spark arrester screen and cover to the 

muffler.

4.  Remove the screen and clean it with a 

stiff bristle brush.

5.  Inspect the cylinder exhaust port for 

any carbon buildup.

6. 

Reassemble the spark arrester, muffler 

and engine cover in the reverse order 

of disassembly.

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..

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, otherwise severe

 engine damage may result.