🔧 Karbay 690981 & 690982 BS Push Rods Set with 690971 Replacement Valve Cover Gasket: Ultimate Engine Performance Enhancement Review

Deserves zero stars, got the valves installed and adjusted correctly. lasted about 30 seconds from initial launch before the wafer-thin pusher shattered and propelled the ball in.

Questionable quality! Buy OEM Briggs & Stratton Pushers! The first set separated and the second set seemed to flatten the ends of the round bars. We saved the parts cost, we spent three times more on the labor!

Mowing about 15-30 minutes after installing these parts when they failed. After dismantling, both end bearings fell off the aluminum slide. I've been so frustrated that I haven't fished them out yet, but I suspect I'll be in big trouble if they go into the engine.

The welds on the steel exhaust tappet are so bad they don't even survive shipping. The aluminum intake manifold lifter was missing. If these items do not survive shipping, there is no way I would install them in my engine. I will promptly return these parts and purchase genuine Briggs & Stratton parts. lesson learned

Not even close to standard quality The product is made of aluminium, it should be made of steel, see the photos for comparison. UPDATE: Since they advertise it on Revain as a replacement, I'm installing it, and please note I'm not perfect, but I've done it many times with many engines. the engine was idling for about 10 minutes to write the whole seat, as soon as i started the engine it started to overshoot, shut off the engine, rechecked all the pushrods, and lo and behold the bumper vent…

Okay, I've been repairing small engines in the neighborhood for years. The tappets flex because operators allow grass, mouse nests, and oil leaks in the valve cover to block the cooling fins. Lack of maintenance will cause aluminum cylinder heads to overheat and force the exhaust valve guide out of the head. The rocker arms then hit the rails, causing the pushrods to flex and then fall out of position. With twin cylinder engines, the problem is acute because the remaining cylinder continues to…