You need a repair manual if you are a do it yourselfer. It is fairly simple with the manual.
www.hdtalking.com/transmission_clutch_and_primary/3173-how_to_adjust_primary_chain_video.html
yes on the bottom of the primary
once inside the primary, loosen the compensator on the front and the clutch basket on the rear. lay them out take old chain off, then put them back on at the same time and correctly tighten then use slack adjuster to tighten
under the primary is a 3/4" lock nut, loosen that and adjust the screw by looking through the chain inspection hole. When tightened properly there should only by 3/8" vertical play in chain.
To replace the starter on a 1988 Heritage Softail Custom, first disconnect the battery to ensure safety. Remove the primary cover and drain the primary fluid, then take off the primary chain and clutch assembly if necessary to access the starter. Unbolt and disconnect the old starter from the mounting plate and electrical connections, then install the new starter by reversing the steps. Reassemble the primary components, refill the primary fluid, and reconnect the battery.
Adjust the sprocket of the chain
How to adjust timing chain Yamaha sr125
The engine in the Polaris Sportsman 500 is self adjusting. There is no need to adjust the timing chain on the Sportsman 500. If you are hearing the chain slap, it is time to replace the chain, not adjust it.
Timing chain as well as belt cannot be adjust. If the chain has got stretched you have to replace it.
on my hd deluxe it is 7/8 max when hot. i think the manual says between 5/8 to 7/8 hot
You can't adjust the chain on an LT80. You can buy an aftermarket chain tensioner if you wish to do this. This is the only way.
you don't adjust, you replace