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I'm a retired auto/truck mechanic - nothing I own gets thrown out unless I take it apart and attempt to fix it first.
When I bought my home recently, I searched for and downloaded manuals for the wood stove, gas heaters, water pump, propane stove etc.
When I bought my new(used) SUV - ordered 3 repair manuals for it - one for in the vehicle, one for the house and one for the shop(I have a pretty nice garage up here).
True story: - one shock on my truck was seized (on the front) and gave a rough ride - took it off at work. Next day, truck bounced weirdly so I figured it would ride better if I took off the other shock before I left work. (bad idea).
On the way home the front end almost never stopped bouncing - one tiny bump and it just would keep bouncing.
So - as soon as I got home bought the shocks, went to the service dept. (Canadian Tire) and asked how much to put on the shocks. ( remember shocks were already off - that's the hard part - and only 2 bolts per shock needed to reinstall)
Estimate was way too high(over an hour's labour) - told him I could buy the tools needed (2 wrenches) for less than half his labour charges - he responded - "yup probably can" - so I did!
Best part -
Bought the wrenches (actually 1/4 of his labour estimate) - moved my truck to a parking spot right in front of the service manager's window - set the shocks and wrenches on the hood of my truck.
He and one of his mechanics watched as I replaced the shocks in 9 minutes flat, then burned rubber outta there.
So - suggestion:
Start a small collection of basic tools - I could give you a list, but it seems as though you have a knowledgeable source right handy.
Buy a manual for your vehicle, and any other major appliance/investment.
oh - one more thing . . .
READ the manuals.
CC