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svo58
02-23-2005, 08:37 PM
I just got a 84 70cc ATC ,it runs good but the idle is high ,to lower the idle is it the same as 200cc honda(the screw on the slider).Does it have a mixture screw ,if so how many turns should it be out .I just got it and did not get a manual just yet,but i will ,for now can anyone help me,and what grade oil to use.thanks............svo58

mbubbac
02-23-2005, 08:43 PM
hey its me yeah the idle is the screw that sticks out and has a spring on it that you can see and its more in the middle of the carb, the fuel mixture screw is the 1 all the way to the left that dont stick out, the feul mixture screw should be around 1.5 turns thats what ive heard from some one

thefox
02-23-2005, 08:53 PM
Air screw factory setting is 1 1/8, oil is listed as 27oz of 10w40. Those little trikes are a blast aren't they!

mbubbac
02-23-2005, 08:54 PM
yeah it was a blast i just sold it to him like 3 hours ago, i ran 10w30 through it i just changed it with some castrol high milage i had laying around like a week ago but its not the size of it its how you ride it

Barfly
02-23-2005, 10:29 PM
some specs for your bike.
# Model Code for 78-85 models "957"
# 3 speed auto clutch transmission(78-81) 4 speed (82-85)
# 16x8x7 low pressure tyres, SPWAMULASS (Water,Mud,Land,Sand,Snow)
# Tyre pressure 0.2 kg/cm2 (3.0 PSI )
# Length 1300mm, width 800mm, Height 785mm, Weight 74kg
# Engine bore 47mm, Stoke 41.4mm, CR 7.5:1 Displacement 72cc
# Carb Keihin PB38A, main jet 58
# Engine number located below starter and behind gear change shaft.
# Frame number located on steering head stock left side
# Engine Oil capacity .8 ltr
# Fuel tank capacity 4.0ltr, 3.2ltr main and .8ltr reserve
# Point gap 0.3 - 0.4 mm (12 to 16 thou)
# Plug gap 0.6 - 0.7 mm (24 to 28 thou)
# Plug NGK C7HS
# Valve clearance (cold) 0.05mm
Cheers Max. :beer

svo58
02-24-2005, 06:15 AM
Hay thanks for all the info guys,you are right they are a blast to ride.I bought it for my 8 year old son and he loves it.I've been looking for a while,everytime i found one close to me on e-bay i got sniped the last second of the sale,but now my son has one ,thanks mbubbac,and thanks to the rest of you who replyed..........svo58