Q: What fuel to use for the DOLMAR HT2360D hedge trimmer?

Unleaded gasoline 91 ROZ minimum is mandatory for the DOLMAR HT2360D. The high-efficiency 2-stroke engine is designed to operate with this fuel. You can use gasoline with a higher octane rating without risking engine damage. Mandatory mixture with 2-stroke engine oil: The engine only operates when diluted in a fuel-oil mixture. Use a quality TSC-3 2-stroke oil according to the following ratio: Ratio 50:1 with specified DOLMAR 2-stroke engine oil (1 liter gasoline + 20 ml oil) — MANDATORY ratio to ensure engine reliability Ratio 25:1 with professional quality 2-stroke oil from other manufacturers (1 liter gasoline + 40 ml oil) — strongly recommended if DOLMAR oil is unavailable Fuel preparation: In an approved container that meets local standards, first pour in all the oil with half of the required gasoline. Then add the remaining fuel. Shake the mixture vigorously before pouring it into the hedge trimmer's tank. Critical warning: Never use pure gasoline. Never improvise the proportions. An excessive amount of oil produces more combustion residues, clogs the exhaust channel and the catalytic converter, increases gasoline consumption, and reduces performance. An insufficient amount severely compromises the lifespan of the 2-stroke engine.

Question 1

How to troubleshoot if the hedge trimmer blades do not move?

Accepted Answer

Immediately stop the engine and wait for the blades to come to a complete stop before any intervention.

Checks to perform

Check the cutting angle lock - The DOLMAR MH246.4DF has a cutting angle adjustment (45° upwards, 90° downwards). Ensure that the lock engages properly and that the cutting unit is correctly positioned in its notches. If the lock is not properly engaged, the blades will not be able to turn.
Clean the blades of any debris - Check for twigs, grass, or foreign materials stuck between the blades or in the cutting mechanism. Even a small obstruction can completely immobilize the system.
Check the blade play - According to the manual, the play should be adequate. Loosen the nut with a wrench, then tighten the hex bolt until it locks. Re-tighten between ¼ and ½ turn for correct spacing. Too tight a play can block the blades.
Check the grease in the gearbox - The gearbox should be greased every 25 hours of use. Insufficient lubrication can prevent the transmission of movement to the blades.

If none of these checks resolve the issue, it may indicate a problem with the drive system or the motor itself. Contact an authorized DOLMAR service center for a professional diagnosis.

Question 2

What fuel to use for the DOLMAR HT2360D hedge trimmer?

Accepted Answer

Unleaded gasoline 91 ROZ minimum is mandatory for the DOLMAR HT2360D. The high-efficiency 2-stroke engine is designed to operate with this fuel. You can use gasoline with a higher octane rating without risking engine damage.

Mandatory mixture with 2-stroke engine oil: The engine only operates when diluted in a fuel-oil mixture. Use a quality TSC-3 2-stroke oil according to the following ratio:

Ratio 50:1 with specified DOLMAR 2-stroke engine oil (1 liter gasoline + 20 ml oil) — MANDATORY ratio to ensure engine reliability
Ratio 25:1 with professional quality 2-stroke oil from other manufacturers (1 liter gasoline + 40 ml oil) — strongly recommended if DOLMAR oil is unavailable

Fuel preparation: In an approved container that meets local standards, first pour in all the oil with half of the required gasoline. Then add the remaining fuel. Shake the mixture vigorously before pouring it into the hedge trimmer's tank.

Critical warning: Never use pure gasoline. Never improvise the proportions. An excessive amount of oil produces more combustion residues, clogs the exhaust channel and the catalytic converter, increases gasoline consumption, and reduces performance. An insufficient amount severely compromises the lifespan of the 2-stroke engine.

Question 3

What should I do if my DOLMAR HT2360D hedge trimmer won't start?

Accepted Answer

If your DOLMAR HT2360D hedge trimmer won't start, first check that you are following the correct procedure. Place the device on a clean surface, then push the I-O switch to the "I" position. Next, press the primer bulb gently 7 to 10 times until fuel enters the system. Then, set the choke lever to the closed position (important for a cold engine), hold the hedge trimmer firmly, and pull the starter handle slowly 10 to 15 cm until you feel resistance. Finally, pull the handle firmly despite the resistance to start the engine.

A common cause of failure to start is flooding the engine. If you have pulled the starter handle several times with the choke closed, the carburetor is flooded with fuel and the engine will not start easily. In this case, remove the spark plug (NGK CMR6A for the HT2360D) and gently pull the starter handle several times to remove the excess fuel. Make sure to dry the spark plug electrode well before reinserting it.

Also check the condition of the air filter. A clogged filter can prevent the engine from receiving enough air to operate correctly. Clean or replace the filter if necessary. Additionally, ensure that the fuel is correct: the HT2360D requires unleaded gasoline with a minimum octane rating of 91 RON, mixed with oil in a 50:1 ratio using original DOLMAR oil. An improper mixture or contaminated gasoline will prevent starting.

Check the sealing of the spark plug. Remove it and check that it is not dirty, wet, or defective. If the electrode is black and covered with deposits, clean it with a fine wire brush. The gap between the electrodes should be 0.7 to 0.8 mm. If the spark plug is worn or damaged, replace it with a new NGK CMR6A.

If the engine remains without spark (no attempt to ignite), the problem lies with the ignition system. Check that the I-O switch is functioning correctly, that the spark plug connector is not loose, and that there is no damaged wiring. A defective ignition module will require professional intervention. If the engine starts but immediately stalls, the problem often comes from a contaminated WALBRO WYL type carburetor that needs cleaning or an incorrect idle adjustment.

After several unsuccessful attempts, let the engine rest for a few minutes to avoid overheating. For a hot start (immediate restart after stopping), use steps 1, 2, 4, 5, and 6 of the usual procedure but with the choke lever in the open position. If the problem persists despite these checks, consult an authorized DOLMAR professional for a complete diagnosis of the ignition or compression system.

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