2758e8ae0d512d361333e011725ec8bf1f9f325545e37b884ac47b8fc7e53019 No item has been checked against an aircraft or against the engine manufacturer's manual. Control and switch names may not match any real installation. Do not fly behind this file. All RPM, temperature and electrical figures are placeholders, not limitations. Carburettor synchronisation and warm-up procedure must come from the Kawasaki manual for this engine. Inherits the parent's gaps: no taxi, takeoff, cruise, descent or landing sections, and only one emergency procedure.

This aircraft is operated as an ultralight vehicle under 14 CFR Part 103. It has no airworthiness certificate and no N-number, and the pilot needs no certificate or medical. Single occupant only Day, visual conditions only Not over congested areas or open-air assemblies of people Not in Class A, B, C or D airspace without prior ATC authorization Part 103 imposes no maintenance or inspection requirement. Nobody else is checking this aircraft. The preflight is the entire inspection programme. Weight check after the engine swap: the twin and the added battery are heavier than the single they replaced. Confirm the aircraft still meets the Part 103 empty weight limit, because exceeding it makes this an unregistered aircraft rather than an ultralight vehicle.

Cockpit Master switch OFF Ignition switches OFF Fuel shutoff valve OFF Restraint harness CONDITION CHECKED Control stick and pedals FREE, FULL TRAVEL, CORRECT SENSE Airframe Wing struts, lift struts and attach bolts SECURE, SAFETIED, NO CRACKS Sail and fabric NO TEARS, SEAMS INTACT, LACING SECURE Control cables, pulleys and clevis pins CONDITION, SAFETY PINS PRESENT Tail surfaces and hinges SECURE, FREE MOVEMENT Landing gear, tires and bungees CONDITION, INFLATION Engine and propeller Treat the propeller as live at all times. A two-stroke can fire on a single blade movement with the ignition off if a switch or ground lead has failed. Keep the propeller arc clear and never stand in it. Propeller blades and bolts NO NICKS OR CRACKS, TORQUE MARKS ALIGNED Engine mount and rubber isolators SECURE, NO CRACKS Exhaust system and springs SECURE, NOT CRACKED Both carburettors LINKAGE FREE AND EVEN, SYNCHRONISATION MARKS ALIGNED New with the twin. An out-of-sync pair makes one cylinder work harder than the other, which on a two-stroke is a path to a holed piston. Not applicable to the single-cylinder baseline aircraft. Fuel lines and primer bulb NO CHAFING, NO WEEPING Fuel quantity and mix CHECKED, CORRECT OIL RATIO Confirm the premix ratio against the Kawasaki manual for this engine and oil. It is not necessarily the same ratio the previous engine used, and running a two-stroke on straight fuel will seize it. Fuel sample CLEAR, NO WATER Electrical (added with the swap) Battery terminals and mount SECURE, NO CORROSION There is no alternator. The battery starts the engine and is not recharged in flight. A battery that turned the engine over slowly today will not start it at a away-field, and nothing in Part 103 requires anyone to notice that before you go.

Area behind aircraft CLEAR Wheels CHOCKED OR BRAKES HELD Fuel shutoff valve ON Primer bulb FIRM Throttle CLOSED Choke, both carburettors ON TOGETHER AS REQUIRED FOR TEMPERATURE Both must come on and off together. Choking one side only runs that cylinder rich and the other lean. Master switch ON Call "CLEAR PROP" Ignition switches BOTH ON Starter ENGAGE IN SHORT BURSTS Choke OFF PROGRESSIVELY AS ENGINE PICKS UP Warm up PER ENGINE MANUAL BEFORE ADVANCING THROTTLE The twin takes longer to reach even temperature across both cylinders than the single did. A cold run-up is the classic path to a seizure. Both cylinder head temperatures RISING AND ROUGHLY EQUAL A persistent split between cylinders points at a carburettor sync or air leak problem. Nothing on the baseline single-cylinder aircraft corresponds to this check.

Harness TIGHT AND LOCKED Controls FREE AND CORRECT Ignition check EACH CIRCUIT, DROP WITHIN LIMITS Full throttle static RPM PER ENGINE MANUAL FOR THIS PROPELLER PITCH Different from the baseline aircraft: both the engine and the propeller pitch changed. Establish the correct figure for this combination and placard it. Both cylinder head temperatures IN RANGE Windsock and traffic CHECKED Engine failure plan BRIEFED Decide before takeoff where the aircraft goes if the engine stops at 50 feet, at 200 feet, and at circuit height. A two-stroke should be treated as an engine that will stop without warning. The twin is smoother than the single it replaced, which makes it easier to trust and no more likely to keep running. Do not depart over terrain that offers no landing option.

Do not attempt to turn back to the runway. At this aircraft's altitude, speed and glide performance a turn back will stall it. Nose LOWER IMMEDIATELY TO GLIDE ATTITUDE Landing area STRAIGHT AHEAD, WITHIN 30 DEGREES Fuel shutoff valve OFF Ignition switches OFF Master switch OFF Added with the electrical system. The baseline aircraft has no master switch to turn off. Harness TIGHT Flare and land, accepting damage to the aircraft to protect the occupant

Throttle IDLE Ignition switches OFF Ignition switches CONFIRM ENGINE STOPS WITH SWITCHES OFF If the engine continues to run with both switches off, the ignition ground has failed. Stop the engine with the fuel valve and do not fly again until the fault is found. Fuel shutoff valve OFF Master switch OFF Added with the electrical system. Leaving it on flattens a battery that nothing recharges in flight. Chock, tie down or hangar the aircraft