Shindaiwa DH235 Operator's Manual download pdf (Page 16)

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.

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.

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.

Spark Arrester Screen Maintenance

If the engine becomes sluggish and low

on power, check and clean the spark

arrester screen.

WARNING!

Never operate the unit with a

damaged or missing mufer or

spark arrester! Operating with a

missing or damaged spark arrester

is a re hazard and could also dam-

age your hearing.

1. Remove the 2 mufer cover screws

and the mufer cover. See Figure

24.

2. Remove the 3 screws holding the

spark arrester screen,gasket and

cover to the mufer. See Figure 24.

3. Remove the 2 mufer screws and

the mufer. See Figure 24.

4. Remove the spark arrester screen

and clean it with a stiff bristle brush.

IMPORTANT!

If you note excessive carbon buildup,

consult with an authorized Shindaiwa

servicing dealer.

Figure 24

Gasket

5. Inspect the cylinder exhaust port for

any carbon buildup.

6. Reassemble the spark arrester, muf-

er and mufer cover in the reverse

order of disassembly.

Mufer screws

Mufer

Spark arrester

screen

Cover screws

Spark arrester

cover

Mufer cover

Screw

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

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Shindaiwa DH235 Operator's Manual Page 16

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