On this page I put all the usefull information I have available now.
As 3SW owner I have some usefull information about this model and fortunatly
I have found some for the other models.
There are many manualls for sale but it's always handy to find it online, to keep your manualls clean
and have grease on the keyboard of your computer.

	3SW	5SW	3HW
Bore / stroke	70-89mm	84-89mm	70-89mm
Capacity	343cc	493	343cc
Compession ratio	5,3:1		6,7:1
BHP@ RPM	10@4800
Valve timing:
Inlet opens BTC	.12" or 19°	19°	36°
Inlet closes ABC	.72" or 60°	60°	70°
Exhaust opens BBC	.88" or 67°	67°	67°
Exhaust closes ATC	.27"or 29°	29°	36°
Tappet clearance
Inlet	.004"	.004"	nil
Exhaust	.007"	.007"	nil
Ingition, fully advanced	11/32"	5/12"	3/8"
Contact breaker gap	.012"	.012"
Spark plug gap	.015"-.018"	.015"-.018"
Engine sprocket	18 teeth	20	19
Rear wheel sprocket	46 teeth
Tyres front/rear	26"x3.25"
Oil tank	3/4 gallon
Petrol tank	3 1/8 gallon

 

Carburetter
	3SW	5SW	3HW
Amal	75 or 275	75 or 275	76
Main jet	120	120	150
Needle	6	6	6
Throtle valve	5/4	5/4	6/4
Needle jet	107	107
Float chamber	64/079

Frontfork

Looking for a fork? Hard to get and if you find one how will you know that  you have found the right fork?
Here are some good pictures where the difference between a 3SWforks and 3HW forks are very clear.

3HW fork		3SW and 5SW fork