What kind of fluid, and how do I put it in a makita circular saw model 5177-B

put wiresa on opposite side of trigger white one on top black on very bottom

This parts diagram may help.
Makita BSS610 Circular Saw Parts

I sell & repair the Makita line of tools and the BL1830 (194205-3) battery is designed to fit on Makita's entire line of 18-volt tools. You didn't give the model number of your saw so my best suggestion is to make sure the saw is an 18-volt tool then make sure the tool's and battery's mating surfaces are OK. Try the battery in other tools & try other batteries on the saw. If this doesn't help please respond with the saw's model number or what you found out doing what I've suggested.

The armature and field will need to come out. It's quite a bit of work to swap everything over. Here is a parts diagram which should help.

Makita 5007MG diagram

you can get it direct from them at 1-800-4 MAKITA(1-800-462-5482)

HI, i have a feeling the pad could be the issue there. The genuine Makita one is designed for the motor, so unless the the replacement is exactly the same thickness, diameter, and weight then you will have problems. Imagine putting a small wheel designed for a car on a truck, that kind of issue. Best thing to do is to try putting the old Makita pad back onto the machine and see if that make any difference. (that is if you still have it) At work we have had similar problems where we have used non-genuine circular saw blades onto our Makita saws, and its has burnt the motor out.

is the spring stretched?? there are 2 holes one in the lower guard and one in the upper guard assembly towards the back that you have to put the bend of the spring in

You can go to www.eReplacementParts.com. I've have pretty good luck finding items. Make sure you have the model number available. Good Luck!

that is the standard circular saw with stationary shoe you cannot really set a depth in that model.l

it needs more gas adjust the screw on the carburator