Carburetor Adjustment - Shindaiwa EB633RT Owner's/Operator's Manual

Exhaust Port Cleaning
Level 2
Parts Required: As needed: Heat Shield
1. Remove spark plug lead from spark plug, and remove engine cover.
2. Place piston at top dead center. Remove muffler (A) and heat shield
(B).
3. Use a wood or plastic scraping tool to clean deposits from cylinder
exhaust port.
IMPORTANT
Never use a metal tool to scrape carbon from the exhaust port.
Do not scratch the cylinder or piston when cleaning the ex-
haust port. Do not allow carbon particles to enter the cylinder.
4. Inspect heat shield, and replace if damaged.
5. Install heat shield and muffler.
6. Tighten muffler mounting bolts (or nuts) to 110 - 150 kgf • cm
(95 - 130 in • lbf).
7. Install engine cover and attach spark plug lead.
8. Start engine, and warm to operating temperature.
9. Stop engine, and re-tighten mounting bolts to specifications.

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. Dur-
ing 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.
B
A
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