Been a while since I last posted, but I have a Honda HHB25 4-stroke petrol blower Model UBAJ-1015484 fitted with a Honda GX25 OHV engine Model GCAAM-1242717 that has got me stumped at this point. Said to have worked last year, but won't start this year. Appears to have reasonable compression, using a simple finger in the spark plug hole method, but refuses to start. Even spraying "Start Ya Bastard" (Ether spray) into the engine through the spark plug hole or directly through the carburetor will not get it to kick over, which is unusual. Pulled the spark plug out and gave it a clean. It throws a good spark, so doesn't seem to be the issue. Pulled the muffler off and cleaned the spark arrestor gauze to ensure there were no blockages. Whilst the muffler was off, gave the motor a few pulls on the starter rope and it throws exhaust compression out the muffler port. Pulled the rocker cover off and checked the valves were moving, but not gap checked at this stage. No issues noticed with them. New good quality fuel put in the tank. Replaced the fuel primer bulb as it was split. Replaced the fuel lines as one was rock hard and the other had gone soft. Checked and cleaned the fuel filter. Carburetor needs a diaphragm kit installed, but that doesn't explain why it won't fire. Can't work it out and has got me stumped. Daryl
