Post by rapidrob on Apr 24, 2017 23:07:14 GMT -6
I was given a Honda 1978 NC50 Express today. It has been sitting out in the desert under a tree for the last 20 years.
The tires are rotten,brake cables frozen up and fuel lines fossilized. Other than that the bike is in good shape.
The piston was free and after oiling up the piston and cylinder and turning the engine over by hand I'm reading 85 pounds of compression. The scooter is showing less than 700 miles on the odometer which is still hooked up.
The spring starter was wound up like a cheap clock and would not release via the rear brake trip lever at the transmission.
I opened up the transmission cover ( a good thing as the oil had thickened to like crude oil and really smelled bad) only to find the the Starter Arm(?) and it's hair spring were no longer touching the gear and had slipped behind the sprocket. No parts were damaged,just out of place.
I was able to safely unload the starter spring and attempted to replace the left cover back onto the transmission casting. The Starter Arm does not want to cooperate and keeps wanting to go behind the sprocket. I put a little tension on the starter spring to force the Starter Arm against the tooth of the sprocket. After having "fun" aligning the various pins and shafts in the housing I replaced the dozen or so screws only to find that darn Starter arm had moved off of the sprocket again,this time not allowing the face of the Starter Arm lever to stay on the sprocket tooth allowing the starter spring to be wound.
As far as I can see in the manual ( provided here on this site,thank you very much,Sir) I do not see that any parts are missing,it must be the way I'm trying to reassemble the two half of the transmission.
I would really appreciate any tips since a photo would be impossible. As to how the Starter Arm sits normally and how to put it back together without the part shifting escapes me?
I've been working on and building mini-bikes since the mid 60's and can swing a wrench with the best of them.
The little Honda looks to be a fun bike to play with.
Thank you for any help.
The tires are rotten,brake cables frozen up and fuel lines fossilized. Other than that the bike is in good shape.
The piston was free and after oiling up the piston and cylinder and turning the engine over by hand I'm reading 85 pounds of compression. The scooter is showing less than 700 miles on the odometer which is still hooked up.
The spring starter was wound up like a cheap clock and would not release via the rear brake trip lever at the transmission.
I opened up the transmission cover ( a good thing as the oil had thickened to like crude oil and really smelled bad) only to find the the Starter Arm(?) and it's hair spring were no longer touching the gear and had slipped behind the sprocket. No parts were damaged,just out of place.
I was able to safely unload the starter spring and attempted to replace the left cover back onto the transmission casting. The Starter Arm does not want to cooperate and keeps wanting to go behind the sprocket. I put a little tension on the starter spring to force the Starter Arm against the tooth of the sprocket. After having "fun" aligning the various pins and shafts in the housing I replaced the dozen or so screws only to find that darn Starter arm had moved off of the sprocket again,this time not allowing the face of the Starter Arm lever to stay on the sprocket tooth allowing the starter spring to be wound.
As far as I can see in the manual ( provided here on this site,thank you very much,Sir) I do not see that any parts are missing,it must be the way I'm trying to reassemble the two half of the transmission.
I would really appreciate any tips since a photo would be impossible. As to how the Starter Arm sits normally and how to put it back together without the part shifting escapes me?
I've been working on and building mini-bikes since the mid 60's and can swing a wrench with the best of them.
The little Honda looks to be a fun bike to play with.
Thank you for any help.
