honda HT3813?

There can be many reasons for that. I would start with the simple ones. Check every fuse in the box on the radiator to make sure they are not blown.
Then get new NGK spark plugs (2). Then make sure that battery is fully charged, or use jumper cables from the car. Take spark plug out of cylinder one from radiator. Put new plug into the socket and lay it against metal of the block. Crank engine starter and observe the spark. If spark is there then. Take a second plug out, replace both with new plugs and start the motor with fresh gas. If still no spark then you may have a problem with ignition coil or fuse/relay issue. Check every fuse in the box on the radiator to make sure they are not blown. If fuses and relays are fine and no spark, then ignition coil may needed to be replaced. I hope it helps

Zino
April 2006