being a hack mechanic with these is part of the fun. run forever and rebuild anywhere

My grandfather has a cool old-school oscilloscope. I think it's made by Sears Roebuck. He showed me how to use it once on his 1969 Ford. I can't say I've ever used it since. When setting up the points on these little Hondas I usually set it like shown here and fine tune it with an inductive timing light. As for the wear on the follower, a drop of oil on the felt goes a long way to reduce wear. Seeing as how the part costs so little, I generally just replace it if there is noticeable wear.

Yea dwell wasn't as important on these little guys as it was on the high performance two strokes like the Kawasaki and Suzuki triples. Severe engine damage could happen if I got it wrong.

Getting the dwell angle wrong won't do anything much to your two-stroke engine, just misfire and oil up plugs. Shorter dwell gives less time for a charge to build in the primary coil that collapses and cause the spark when the points open. On a high-performance engine the stronger your spark the better, so longer times are favoured. This video is not by a trained mechanic. This motor is so simple you have to use the points gap to set the timing. Using the F mark on the rotor, get it close enough using a cigarette paper to see when they open. Even better use a strobe light. The T mark indicates Top Dead Centre for setting the valve timing and adjusting the tappets. Starting it on the bench is more affectation than it is useful, even for making a video. That said this is one of the simplest and most fault-tolerant engines around, produced by the millions and hardly changed after they ditched the pushrod versions. The state of tune isn't all that important if you just want an engine that runs and starts; these things are designed to be one-kick starters.

Dennis minitrail .Can a point system converted to cdi .?

Yes, the second coil is for lights. I forget what year the Z50's stopped having the lighting coil.

TheAlexManVideos ok thanks!

Honda Trail Bikes or DrATV both sell the gasket you need.

TheAlexManVideos thanks!! I found one at DrATV and have since got it up and running great!!!

T marks TDC and it is also where the point gap should be set. F marks the firing point. The engine fires when the points open. Thus, the points should open at, not before or after, the F mark. An inductive timing light should show the F mark lining up to the index mark on the case when the engine is running. Setting the point gap at the F mark will result in the points never closing and a bike with no spark.

i have a kawasahki 180 2 strock it dont want to spark wt can i do

Condensor maybe

DrATV I think. If you Google Z50R flywheel puller you'll get plenty of options.

@@TheAlexManVideos do you have to use an impact to get flywheel off?

Joe Jones You can find .PDF files online of the service manual. It has a detailed troubleshooting guide which will direct you to which tests to do in what order. It will outline how to do the tests for each component. This video is a good guide for setting the points. If the bike ran fine when parked, the points are possibly dirty. You could try cleaning the layer of corrosion off the points by sanding them with fine sandpaper.

Ok thank you for that I will get a service manual and do that then thanks.

Which 1973 Suzuki bike you have and want to know information about? Whether it is A50 or A80 or A100 or GP100 or GP125 or SB200 ?

M27x1.0 LH thread.

Unlikely, but possible. Have you replaced the spark plug? Check the easy stuff first. Also check the kill switch and or key switch. They usually work by grounding out the ignition to kill the engine so you can typically just unplug them to start the engine. This may not apply in your case since your bike is from some unknown manufacturer so who knows how they did it.