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Hi. Hope you're well. I am working on a 1998 25 EL, serial 0G614644, that suffered a minor overheat and jammed a piston. The piston is a little scuffed but not bad at all. Very little aluminum in the cylinder. Anything there can be taken off the cylinder wall with a mild acid. The rings got...

I was recently looking at a 2003 25 hp 4 stroke that seemed to be low on power. On this engine, a single coil pack supplies power to each cylinder. I noted that the top coil output wire went to the top cylinder's spark plug and the bottom coil output wire went to the bottom cylinder's spark...

When looking at spark, be sure to look at spark plug output / performance, not just coil air gap performance. Coil may look fine on a tester but the plug may not be transmitting that energy. Don't assume the plug is working. Not that this has burned me before, ... NGK ... Are coil to plug...

Great ideas! As always, thank you. J

Before your drop the lower unit, try pushing a wire up the tell tale. Insects love those small dark holes. I can't tell you how many times I've seen this prevent a water pump job. J

Hi. I have been slowly bringing back a Rebel 1650 with a Honda 50, 4 stroke. Good news: it was given to me as partial payment for a job. Bad news: it was given to me as partial payment for a job. The engine seems firm. I have gone through it and last time out it started and ran very strong...

Just went to school. Found the ignition coil putting out great spark. Jumps a 3/8" air gap. Then attached the spark plug, grounded it to the engine block and observed there is NO spark. The plug is flat out bad. NGK. Replaced with Champion. Fired right up. Found the SAME THING with the 5...

Not sure I understand your post. Your post title implies you have serial number 0G59XXXX but when asked to verify you mention serial number 0T339XXX. Be sure you are using the correct parts list. J

True. No stator. Point, condensers, magnetos. Set points to 0.020". Loosen and scrub condenser connections. Odd to lose both cylinders' spark simultaneously; many parts. Can you take a picture of the numbers or the engine? Is there an aluminum welch plug in the engine block with numbers...

Need the serial number off your engine to be sure. Please provide. J

Excitingly, I received another one of these engines yesterday! 5 hp version with capability to run off internal or external fuel tank; model 1FX5201HK, serial 0R433254. Same initial symptom. Compression at 60. Has spark. Fake the fuel delivery. Just won't ignite fuel. Not even a cough. What...

Thank you. I shall try one. J

Thank you. Seems like a pretty neat device. Are these zingers more effective than the typical 3 bolt puller? This thing is really stuck. J

dva meter reading is consistent. Changing the scale will change the reading. You are showing 1 when set at 20 therefore higher than 20v. Reading 43.5 when set at 200 v scale; 43.5 volts. Reading 45 when set at 600v scale; 45 volts. Conclusion: you have 44 to 45 volts. No variation problems. J

I'm replacing a timing belt on a 2001, 25ELPT 4S, serial 0T284681. The flywheel is giving me trouble. Can you point me in the direction of a good flywheel pulling instructional? Thanks, J

Be wary of the compression numbers. The gauge could be bad. What are the chances 2 cylinders are gone at the same time? More likely the gauge itself is off. In addition to magnitude, the other thing you want to see from a compression test is the consistency between cylinders. You have that...

There's a chance you'll find something on the CDI Electronics site. They used to have a very good troubleshooting resource. J

Unfortunately, the couple exploded views that I use as reference require a serial number as input. Any chance you can get us that? I have seen incomplete travel on the ignition advance. Without knowing your configuration I cannot say that this is your problem. It's just an idea. I mention it...

Hi. Hope you're well. I have a single cylinder 4 stroke 6 hp that won't even cough. Model ME6M 4ST, serial 0R019810. Compression at 65 psi. Spark jumps 1/4 to 3/8 inch air gap. Fuel spit right into cylinder. Can pull all day and get nothing. It's such a simple engine. Would timing have...

Watching the thermostat housing temp with an infrared thermometer I could predict when the alarm was going to blow; when I saw about 190 degrees. I ended up splitting the T at the tell tale and blowing compressed air separately into each line. On the power head side, air went all the way...