They are in the left crankcase. Look on the bottom of the engine, the bolt that is at an angle vs the one pointing straight down which is the drain plug.
Honda has gon thru god knows how manny ideas on how to design it. All else fails, get an aluminum rod that will fit up the passage. Get a spring
the same size, cut the rod so the spring is in compression, maybe compress finger stregth.
The 82/83 tensioner is a slip fit, the area under the tensioner is oil filled with a light spring to keep the tensioner extended, if the cam chain whips
the oil is restricted from flowing out by a small hole, this keeps the cam chain from whiping.Other designs have an adjustable length rod, some have
a heaver spring and a jamb bolt. Seems Honda did not like the idea of constant tension on the cam chain.
Bill
Portland OR
From: Jill <jillvee@yahoo.com>
To: Honda-C70@yahoogroups.com
Sent: Thursday, August 18, 2011 7:03 PM
Subject: [Honda-C70] Cam Tensioner Parts?
So my timing is won't stay because i guess my cam tensioner isn't working. I looked up what the cam tensioner parts are, and i've never even seen them before after rebuilding my motor twice. Where are they (supposed to be) located?
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1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs:
http://www.shlaes.com/Vehicles/Scooter.htm
http://www.velodrome.com/HondaC70/HondaC70.html
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