The hole is so small that the 2018 Yamaha outboard flushing nozzle is receiving insufficient flow causing the upper unit to have no water flow - no water will flow out of the check hole. Remove the CRC flush nozzle and the water flow from the hose will circulate through the powerhead and exit through the inspection hole. What a waste of money, time and effort while subjecting the powerhead to inadequate cooling circulation. DO NOT BUY! Unfortunately, I didn't notice the many negative reviews of this piece of junk and didn't use it within the return period. A complete waste of money. Revain should be ashamed to sell such a flawed product.
IDRYBAG Dry Bag Backpack Waterproof Floating 20L/30L/40L, Dry Bags Waterproof Backpack For Men, Dry Sack Waterproof Bag Kayak
39 Review
Smartphone Apple iPhone 7 32 GB, 1 SIM, black
80 Review
Keep Your Gear Safe And Dry With MARCHWAY'S Waterproof Dry Bag - Perfect For Kayaking, Rafting, Boating, Camping And More!
38 Review
Yokohama Ice Guard IG60 225/60 R17 99Q winter
31 Review
TAC9ER Kevlar Lined Tactical Gloves: Full Hand Protection, Cut & Temperature Resistant, Touchscreen Friendly For Men & Women
45 Review
Hornady Black Diamond By Umarex - Improved Product Name For Enhanced Search Engine Optimization
28 Review
Maddogยฎ Sports Padded Chest Protector, Tactical Half Glove, & Neck Protector Combo Package
23 Review
MetalTac Airsoft Speed Loader With Capacity Of 100 Bbs
27 Review