92KK 84WW Olaf
Life time member
Number of posts : 7955
I use Motul 3000 20W50 mineral oil and my Ks seem to love it. Also filter I think is HiFlo HF163.
Both of these are used in Hondas and the filters are available at Honda dealers.
Gearbox and final drive use 80W90 but need slightly more than a litre to do both. Again, Honda dealers are good for it.
Strictly you need to lubricate drive shaft splines and its not difficult. Of course, Honda dealer again!
Coolant change, best option is to slacken the hose at the water pump and not to open the drain plug. For refill you can move the tank back and raise the front, rad cap is under front right. You will need to put bike on to side stand to get the air out when refilling it.
Now I would go and polish the bike in detail, not to make it look good but to be getting in to inspect all the nooks and crannies and see whats there, looking for any leaks etc.
There is more, brake fluid change....DOT4 from .......Honda dealer.
There are lots of little things like vacuum pipes and vacuum caps [dirt cheap but cause bad running], issues in the fuel tank [fuel pump, filter, pump mounting and damper etc] rotting out fuel lines [cheap enough from a ...Honda dealer], dirty injectors, usually cause by sitting with bad petrol, rotting out fuel lines or missing fuel filters.
I would start by riding the bike a bit and getting a feel for it. The forum is great for knowledge and swapping parts or part sources.
One thing I usually do when I get a K bike...put in a new clutch cable.
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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles.
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles
Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500