Question 1

Why does the Tanaka TCS 33EDT chainsaw not restart easily when hot?

Accepted Answer

When a gas chainsaw heats up and becomes difficult to restart, it is usually related to fuel supply or ignition issues. Here are the checks to perform on your Tanaka TCS 33EDT:

Common Problems and Solutions

1. Incorrect fuel mixture

Check the fuel-oil mixture ratio: maintain the proportion of 50:1 (2% 2-stroke engine oil)
Excess oil creates carbon deposits on the spark plug, blocking ignition
Empty the tank and prepare a new mixture with quality products

2. Condition of the spark plug

Remove the spark plug and inspect it: it should be clean and light brown in color
If dirty (black or covered in soot), gently clean it with a soft brush or replace it
Check the electrode gap: it should be 0.6 mm

3. Clogged air filter

A dirty filter reduces air intake and excessively enriches the mixture
Remove the air filter and wash it in warm soapy water
Let it dry completely before reinstalling

4. Hot restart procedure

Turn off the engine and wait 1-2 minutes
Prime the pump 10 times to fill the carburetor
Pull the starter gradually without forcing
If the machine struggles, avoid full choke: set the choke lever to the intermediate position

5. Misadjusted carburetor

If the problem persists after the previous checks, the carburetor may need adjustment. Refer to the manual for specific adjustment procedures, or contact an authorized service center.

Question 2

How to use the choke when restarting the chainsaw after a hot stop?

Accepted Answer

When you restart the Tanaka TCS 33EDT chainsaw after a short stop or when the engine is still warm, the choke management is different from cold starting.

Hot Restart Procedure:

Do not close the choke completely. Set it to an intermediate or semi-open position, unlike cold starting which requires a full closure.
Reason: When the engine is warm, the fuel evaporates more easily. A choke that is too closed would make the mixture too rich and prevent starting.
Pull the starter. The machine should restart more easily with this intermediate choke position.
If the engine does not start immediately: Gradually open the choke further and try again.

For subsequent starts, once the engine is well warmed up, you can leave the choke fully open.

Question 3

How to adjust the carburetor of the Tanaka TBC600?

Accepted Answer

Preparation

Ensure that the air filter of the Tanaka TBC600 is clean before proceeding with the adjustment.

Idle Adjustment (T screw)

This is the only adjustment screw accessible to the user:

Start the engine
Turn the T screw clockwise until the cutting tool starts to rotate
Then turn counterclockwise until the blade stops completely

Target idle speed: 2,500 to 3,000 rpm. The engine should run smoothly and the tool should not rotate at minimum idle.

Adjustments of L and H screws

These two screws are pre-set at the factory. If an adjustment is necessary (engine not starting or poor acceleration), the standard values from a slightly closed position are:

L screw (low-speed circuit): 1 turn 1/8
H screw (high-speed circuit): 1 turn 1/4

Important: Never turn these screws more than 90° beyond their initial position, otherwise the engine may be damaged.

Engine Specifications

The Tanaka TBC600 is equipped with a 47 cm³ 2-stroke single-cylinder engine with a maximum speed of 9,900 rpm. Use a lead-free gasoline mixture (minimum octane rating 89) and 2-stroke oil in a ratio of 25:1 to 50:1 depending on the type of oil used.

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